Types of jobs are most needed is marketing. There are 3 factors that influence consumer decision process is the difference individual character, environmental factors, and marketing strategies.
The decision making process is influenced by psychological factors consumers, such as personality, motivation, and the process consumer communications. Other factors that influence is the social and cultural of the consumer. The understanding of factors can be used in the marketing system of the manufacturer of the product to influence consumer decisions in choosing products. consumers and predict consumer behavior.

Neo Freudian theory (Theory of Social Psychology):
• Personality is influenced by the social environment. This theory did not agree with the dominant role of instinct and sex/ biologic in the formation of personality.
• Lifestyle is a reflection of the personality. Reflects how people allocate time and money. Different lifestyles will result in different behaviors, so it will give a different business opportunities.
• Self-concept is a combination of personality and lifestyle according to Williams (1890).